Open camera . hold in landscape mode. Tap rectangle at top left of screen. Shooting mode menu appears. One of the options is self shot.
Uses the lesser quality front camera.
Or if its the timer you are after its in the menu accessed using the cog wheel icon in the bottom left.

Open camera . hold in landscape mode. Tap rectangle at top left of screen. Shooting mode menu appears. One of the options is self shot.
Uses the lesser quality front camera.
Or if its the timer you are after its in the menu accessed using the cog wheel icon in the bottom left.

Turn the camera on and start the video. Position the camera with some type of support.
Move to where you want to be video'd.
Stop the camera and playback to see how it looks.
Adjust your position until you find the best place.
A little trial and error and you will get it right.

Then *if need be*, take the video and edit out the beginning/end parts.